Xueyuan Prefecture, located in the glacier zone, is relatively cold all the year round. It is magnificent to see snow mountains rising from the ground. The area of Xueyuan Prefecture is vast and sparsely populated. It can be said that 108 prefectures of Tang Dynasty had the most sparse population and the widest area.

Xuanbing City is the state city of Xueyuan State. The reason why it is called is that all the walls of Xuanbing City are cast by Xuanbing. From a distance, the huge city pool standing on the land of the ice field appears extremely magnificent and beautiful.

In Xuanbing City, there is a circular building covering...